DockerによるRails環境でRSpecとfactory_botを導入する方法まとめ

$ docker-compose down

group :development, :test do
  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
  gem "debug", platforms: %i[ mri mingw x64_mingw ]

  # テストフレームワーク
  gem "rspec-rails"
  gem "spring-commands-rspec"
  gem "factory_bot_rails"
end

$ docker-compose run --rm app rails g rspec:install

--require spec_helper
--format documentation

$ docker-compose run --rm app bundle exec spring binstub rspec

~
Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # Turn false under Spring and add config.action_view.cache_template_loading = true.
  # bin/rspec実行のためにfalseに変更
  #config.cache_classes = true
  config.cache_classes = false

~

~
module DnprpApp
  class Application < Rails::Application
    # Initialize configuration defaults for originally generated Rails version.
    config.load_defaults 7.0

    # Configuration for the application, engines, and railties goes here.
    #
    # These settings can be overridden in specific environments using the files
    # in config/environments, which are processed later.
    #
    # config.time_zone = "Central Time (US & Canada)"
    # config.eager_load_paths << Rails.root.join("extras")

    # テストフレームワークをRSpecに設定
    config.generators do |g|
      g.test_framework :rspec,
        fixtures: false,
        view_specs: false,
        helper_specs: false,
        routing_specs: false
    end

  end

~

$ rm -rf src/test/

~
RSpec.configure do |config|
  # Remove this line if you're not using ActiveRecord or ActiveRecord fixtures
  config.fixture_path = "#{::Rails.root}/spec/fixtures"

  # If you're not using ActiveRecord, or you'd prefer not to run each of your
  # examples within a transaction, remove the following line or assign false
  # instead of true.
  config.use_transactional_fixtures = true

  # You can uncomment this line to turn off ActiveRecord support entirely.
  # config.use_active_record = false

  # RSpec Rails can automatically mix in different behaviours to your tests
  # based on their file location, for example enabling you to call `get` and
  # `post` in specs under `spec/controllers`.
  #
  # You can disable this behaviour by removing the line below, and instead
  # explicitly tag your specs with their type, e.g.:
  #
  #     RSpec.describe UsersController, type: :controller do
  #       # ...
  #     end
  #
  # The different available types are documented in the features, such as in
  # https://relishapp.com/rspec/rspec-rails/docs
  config.infer_spec_type_from_file_location!

  # Filter lines from Rails gems in backtraces.
  config.filter_rails_from_backtrace!
  # arbitrary gems may also be filtered via:
  # config.filter_gems_from_backtrace("gem name")

  # factory_bot用の設定
  config.include FactoryBot::Syntax::Methods
end

$ docker-compose build
$ docker-compose up -d

$ docker-compose exec app bin/rspec

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